<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品分类</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="showAddCateDialog">添加分类</el-button>
        </el-col>
      </el-row>
      <!-- 表格 -->
      <tree-table
        class="treeTable"
        :data="cateList"
        :columns="columns"
        :selection-type="false"
        :expand-type="false"
        index-text="#"
        :show-row-hover="false"
        show-index
        border
      >
        <!-- 是否有效 -->
        <template slot="isOk" slot-scope="scope">
          <i
            class="el-icon-success"
            style="color: lightgreen"
            v-if="scope.row.showStatus === 1"
          ></i>
          <i
            class="el-icon-error"
            style="color: red"
            v-if="scope.row.showStatus === 0"
          ></i>
        </template>
        <!-- 排序 -->
        <template slot="order" slot-scope="scope">
          <el-tag size="small" v-if="scope.row.catLevel === 0">一级</el-tag>
          <el-tag size="small" type="success" v-else-if="scope.row.catLevel === 1"
            >二级</el-tag
          >
          <!-- <el-tag size="mini" type="warning" v-else>三级</el-tag> -->
        </template>
        <!-- 操作 -->
        <template slot="opt" slot-scope="scope">
          <el-button
            type="primary"
            icon="el-icon-edit"
            size="mini"
            @click="showEditCateDialog(scope.row)"
            >编辑</el-button
          >
          <el-button
            type="danger"
            icon="el-icon-delete"
            size="mini"
            @click="removeCate(scope.row.catId)"
            >删除</el-button
          >
        </template>
      </tree-table>
    </el-card>
    <!-- 添加分类的对话框 -->
    <el-dialog
      title="添加分类"
      :visible.sync="addCateDialogVisible"
      width="50%"
      @close="addCateDialogClosed"
    >
      <el-form
        :model="addCateForm"
        :rules="addCateFormRules"
        ref="addCateFormRef"
        label-width="100px"
      >
        <el-form-item label="分类名称：" prop="catName">
          <el-input v-model="addCateForm.catName"></el-input>
        </el-form-item>
        <el-form-item label="父级分类：">
          <!-- options：数据源 -->
          <!-- props：指定配置对象 -->
          <el-select @change="parentCateChanged" v-model="selectedKey" clearable placeholder="请选择">
            <el-option
              v-for="item in parentCateList"
              :key="item.catId"
              :label="item.catName"
              :value="item.catId"
            >
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="是否有效" prop="showStatus">
          <el-switch
            v-model="addCateForm.showStatus"
            :active-value="1"
            :inactive-value="0"
            active-color="#13ce66"
            inactive-color="#ff4949"
            active-text="启用"
            inactive-text="禁用"
          >
          </el-switch>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addCateDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addCate">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 编辑分类的对话框 -->
    <el-dialog title="编辑分类" :visible.sync="editCateDialogVisible" width="50%">
      <el-form
        :model="editCateForm"
        :rules="editCateFormRules"
        ref="editCateFormRef"
        label-width="100px"
      >
        <el-form-item label="分类名称：" prop="catName">
          <el-input v-model="editCateForm.catName"></el-input>
        </el-form-item>
        <el-form-item label="父级分类：">
          <!-- options：数据源 -->
          <!-- props：指定配置对象 -->
          <el-select @change="parentCateChanged" v-model="selectedKey" clearable placeholder="请选择">
            <el-option
              v-for="item in parentCateList"
              :key="item.catId"
              :label="item.catName"
              :value="item.catId"
            >
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="是否有效" prop="showStatus">
          <el-switch
            v-model="editCateForm.showStatus"
            :active-value="1"
            :inactive-value="0"
            active-color="#13ce66"
            inactive-color="#ff4949"
            active-text="启用"
            inactive-text="禁用"
          >
          </el-switch>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editCateDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="eidtCate">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 商品分类数据
      cateList: [],
      // 为table指定列的定义
      columns: [
        {
          label: "分类名称",
          prop: "catName",
        },
        {
          label: "是否有效",
          // 当前列 自定义模板
          type: "template",
          // 当前这一列使用的模板名称
          template: "isOk",
        },
        {
          label: "等级",
          // 当前列 自定义模板
          type: "template",
          template: "order",
        },
        {
          label: "操作",
          // 当前列 自定义模板
          type: "template",
          template: "opt",
        },
      ],
      // 添加分类
      addCateDialogVisible: false,
      // 添加分类对象
      addCateForm: {
        // 将要添加分类名称
        catName: "",
        // 分类父级id
        parentId: 0,
        // 分类等级：`0`表示一级分类；`1`表示二级分类；
        catLevel: 0,
        // 显示状态
        showStatus: 1,
      },
      // 添加分类表单的验证规则
      addCateFormRules: {
        catName: [{ required: true, message: "请输入分类名称", trigger: "blur" }],
      },
      // 父级分类列表
      parentCateList: [],
      // 选中的父级分类Id
      selectedKey: "",
      // 编辑对话框 控制
      editCateDialogVisible: false,
      // 编辑分类表单验证
      editCateFormRules: {
        catName: [{ required: true, message: "请输入分类名称", trigger: "blur" }],
      },
      // 编辑表单 绑定对象
      editCateForm: {
        catName: "",
        parentId: '',
        catLevel: '',
        showStatus: 1,
      },
    };
  },
  created() {
    this.getCateList();
  },
  methods: {
    // 获取商品分类
    async getCateList() {
      // 发获取数据请求
      const { data: res } = await this.$http.get("/xuanmall/category/list/tree");
      // console.log(res);
      if(res.code !== 0)return 0
      this.cateList = res.data 
      //清空父级分类
      this.parentCateList=[]
      res.data.forEach((item) => {
        const obj = {
          catId: "",
          catName: "",
        };
        if (item.catLevel === 0) {
          obj.catId = item.catId, obj.catName = item.catName;
          this.parentCateList.push(obj);
        }
      });
    },
    
    // 添加操作
    showAddCateDialog() {
      // 再打开对话框
      this.addCateDialogVisible = true;
    },
    // 添加分类 选择项发生变化触发
    parentCateChanged() {
      // 如果selectKey 说明选中父级分类
      // 当前是编辑弹框框显示
      if (this.editCateDialogVisible) {
        if (this.selectedKey.length) {
          // 父级分类的Id
          this.editCateForm.parentId = this.selectedKey;
          // 当前分类的等级
          this.editCateForm.catLevel = 1;
          return 0;
        } else {
          // 父级分类的Id
          this.editCateForm.parentId = 0;
          // 当前分类的等级
          this.editCateForm.catLevel = 0;
        }
      }
      // 新增弹框显示
      else {
        if (this.selectedKey) {
          this.addCateForm.parentId = this.selectedKey;
          this.addCateForm.catLevel = 1;
          return 0;
        } else {
          this.addCateForm.parentId = 0;
          this.addCateForm.catLevel = 0;
        }
      }
    },
    // 添加分类
    addCate() {
      this.$refs.addCateFormRef.validate(async (valid) => {
        if (!valid) return;
        const { data: res } = await this.$http.post(
          "/xuanmall/category/save",
          this.addCateForm
        );
        if (res.code !== 0) {
          return this.$message.error("添加分类失败！");
        }
        this.$message.success("添加分类成功！");
        this.getCateList();
        this.addCateDialogVisible = false;
      });
    },
    // 添加分类 重置表单
    addCateDialogClosed() {
      this.$refs.addCateFormRef.resetFields();
      this.selectedKey = 0;
      this.addCateForm.catLevel = 0;
      this.addCateForm.parentId = 0;
      this.addCateForm.showStatus = 0;
    },
    // 删除分类
    async removeCate(id) {
      const confirmResult = await this.$confirm(
        "此操作将永久删除该分类, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      if (confirmResult !== "confirm") {
        return this.$message.info("已取消删除！");
      }
      const { data: res } = await this.$http.delete("/xuanmall/category/delete", {
        data: [id],
      });
      if (res.code !== 0) {
        return this.$message.error("删除商品分类失败！");
      }
      this.$message.success("删除商品分类成功！");
      this.getCateList();
    },
    // 显示编辑对话框
    async showEditCateDialog(row) {
      this.editCateForm = row;
      console.log(row,this.editCateForm)
      this.editCateDialogVisible = true;
    },
    // 编辑分类名
    async  eidtCate() {
      this.$refs.editCateFormRef.validate(async (valid) => {
        if (!valid) return;
        console.log(this.editCateForm)
        const { data: res } = await this.$http.post('/xuanmall/category/update',this.editCateForm)      
        
        if (res.code !== 0) return this.$message.error('更新分类名失败！')
        this.$message.success('更新分类名成功！')
        this.getCateList()
        this.editCateDialogVisible = false;
      });
    },
  },
};
</script>

<style lang="less" scoped>
.treeTable {
  margin-top: 20px;
}
</style>
